We can't choose our parents, but we can choose whether or not to have a relationship with them. This week, the Sugars discuss parental estrangement. It's a follow-up to a conversation the Sugars had recently on the show about parents who feel alienated by their children. After that episode was released, an email appeared in the Dear Sugar inbox from a woman who believed the Sugars had discussed her father's letter. She wished to share her perspective -- that of the child who has chosen to estrange herself from …